1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0971ab00f07974fed3fc9d3429225f9d53c8cfe463ed3fb3ad6436d8d520cd83. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d1ee123a-540e-4053-b45f-b6fc43d74e95.json and https://artists.proofprofile.net/proofs/artist/d1ee123a-540e-4053-b45f-b6fc43d74e95.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11767b4fe16cef8da4f35a71ad12619ab5accc7d4e79089f991069fe5125b560. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLGM11948424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9525e64ee797eb2c5a9993b5a63138e8bf82baaa1dde72495c6a63b8dd92202e. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:48:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLGM11933748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaeb1b0ac780de177add109eac6bdd50d8ab96dd20dcbdb1b6b9ddca4b2db13d. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLGM11933749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa8489067fa8a4106993c60a68311e4da69bfc5d7e92a7bfef9c1a17408c93c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLGM11933751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x941d9f4ad41644c0d608b90534d8103d83e46a578bbdde54e5467fadb28d5135. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLGM11933754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be819530e4ab891e1f5ca6dc8555437b0608cc48ae8699bc8b615e8c5749e98. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLGM11933756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea23feddb7a02108409880e6de40cb0e253f788abdd787e7fbb0ee585a9258a. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:55:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLGM11934107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d87a43742808aaa12fe8fdadc1fb10bf87d11bb662875714598b4028831df51. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLGM11934109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01204de30c7ef5c6df8ba03d597c780cdd6df9319d956acb6ec8f43d4cfd08dc. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLGM11934110.
Someday My Prince Will Come - Pianoversie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7d45f2e60e8389f208747e9b4c03d635bd4e5ac280f82f7df1b7e07262739a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLGM11934111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889c2c62253f764cce46ec6199b3a598aa84cd62a404ed9143aa7cb0d8004197. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLGM11934112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cdf371b536348b5b25933e0a16ff7a7f6644d415672b82f92a129d9a6dcfcf2. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLGM11934114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5532a30a66c85c7407f21ad5442a25198b13087b0a920bcb8196fda0eb03193a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLGM11941000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfbe770e8766c3c0e000c3512e43b4df0018ac140349a5a2e44c032c692e958f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLGM11941004.
If You're Happy And You Know It - Trompetversie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ace447c1e477686d2dc3650de61deabc6ddc900d0689d23d90059d4e527ecaa. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLGM11941011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273680de88462083e9bea02dfb974b1888b777b32d58ffa6277c5eff8ace7943. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:49:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLGM11951380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5306b589875f9becc9d5ee810a97d07b4d4007e3c05acbfb72be3795fc8e2535. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:21:16Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLGM11951386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4346e808b871353bbd0ddc6b3e6e73063b75a586419372b89394a37dd7b8372. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLGM12120683.
Boer Wat Zeg Je Van Mijn Kippen - Jazzversie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b3769936413c240e2a6e3a3baee158d2117cc8ba353a222db4bee5d59c46b1. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLGM12120684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749971589c983cf08708ee60cc29ef789cff559b097019f9b646bf0fc6ef69ac. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T05:27:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLGM12120685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a76c45e6d65a3f79ad0244fea7f548cea83798adddf80c3e8d4e4a17f6326c1. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLGM12120686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdedba611f4825191226c9032108d357f1a2edefc2ea48c665e9601a5fcef57a6. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLGM12120687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770070a587f5d418233b70a6afecb15c07b6d542f6ae4f85fbbb0c6866920917. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLGM12120688.
De Leukste Nederlandse Kinderliedjes Op Saxofoon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58cd26a015a7700513f1db5def49af34508a4e3a5177cb8b7fc9b205407af00. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLGM12122613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f2838aa90085451c18f3b8eae54477165a71e285bf416173e2c242f31ad084. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:57:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLGM12139021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271770a1968bc3e9e71541db93d451e1a3d50052d23090c31b6e6d27711dc43f. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLGM12139030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8db7faecbf225204f874b1856b8198a162d8e18b24a200a18da8c5d02fdda07. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLGM12139033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1b6159b820c66ec6457fd9df18a1e7e3c147786e60fac3f188a79e31033715. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLGM12139036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05012e837e641b9383260ae25d309cfcbf34aa758a60a5161bf1e1cd34ddb01c. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLGM12139039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a413abc4140fe3f93fd573364104420ca7bd2f1e182d477d9d368adcc91352a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLGM12139043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5534dd9b1c1ab89f9de3a71fda7d8920093a5fe9f3d1b8ca937d614e7ca1f6d. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:38:03Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL6VJ2218273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1970874901d18189f2f333aca2c37540a76efacdfadfdac5bfa3ad5729946d99. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:21:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL6VJ2218281.
De Beste Salsa- en Dansmuziek voor Kinderen
De Swingende Sprookjeswereld voor Kinderen
Het Beste van Jazz Kat Louis Kindermuziek - Deel 1